.Net: How do I find the .NET version?

Question

How do I find out which version of .NET is installed?

I\'m looking for something as simple as \"java -version\" that I can type at the command prompt and that tells

Answer 1

Here is the Power Shell script which I used by taking the reference of:

https://stackoverflow.com/a/3495491/148657

$Lookup = @{
    378389 = [version]'4.5'
    378675 = [version]'4.5.1'
    378758 = [version]'4.5.1'
    379893 = [version]'4.5.2'
    393295 = [version]'4.6'
    393297 = [version]'4.6'
    394254 = [version]'4.6.1'
    394271 = [version]'4.6.1'
    394802 = [version]'4.6.2'
    394806 = [version]'4.6.2'
    460798 = [version]'4.7'
    460805 = [version]'4.7'
    461308 = [version]'4.7.1'
    461310 = [version]'4.7.1'
    461808 = [version]'4.7.2'
    461814 = [version]'4.7.2'
    528040 = [version]'4.8'
    528049 = [version]'4.8'
}

# For One True framework (latest .NET 4x), change the Where-Oject match 
# to PSChildName -eq "Full":
Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -Recurse |
  Get-ItemProperty -name Version, Release -EA 0 |
  Where-Object { $_.PSChildName -match '^(?!S)\p{L}'} |
  Select-Object @{name = ".NET Framework"; expression = {$_.PSChildName}}, 
@{name = "Product"; expression = {$Lookup[$_.Release]}}, 
Version, Release

The above script makes use of the registry and gives us the Windows update number along with .Net Framework installed on a machine.

Reference: https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed#to-find-net-framework-versions-by-querying-the-registry-in-code-net-framework-45-and-later

Here are the results for the same when running that script on two different machines

1. Where .NET 4.7.2 was already installed:

2. Where .NET 4.7.2 was not installed: